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  ANSI Common Lisp   11 Packages   11.2 Dictionary of Packages

11.2.16 in-package Macro

Syntax:
in-package name    package

Arguments and Values:
name - a string designator; not evaluated.

package - the package named by name.

Description:
Causes the the package named by name to become the current package - that is, the value of *package*. If no such package already exists, an error of type package-error is signaled.

Everything in-package does is also performed at compile time if the call appears as a top level form.

Side Effects:
The variable *package* is assigned. If the in-package form is a top level form, this assignment also occurs at compile time.

Exceptional Situations:
An error of type package-error is signaled if the specified package does not exist.

See Also:
*package*

Allegro CL Implementation Details:
None.

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